New York City (LGA) to London Heathrow (LHR) cheap flight deal from $4373 USD in first class – flightdeals.net

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British Airways

BABritish Airways

Round Trip•First Class

LaGuardia Airport

New York City, United States

London Heathrow Airport

London Heathrow, United Kingdom

$5,222 USD

-16%$4,373 USD

Verified 1 day ago

March 2026

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Sun

23 24$4,722 25 26$4,874 27$4,874 28$4,973 1$4,973 2 3$4,723 4 5 6 7 8$4,874 9 10$4,626 11 12$5,373 13 14 15$4,723 16 17$4,473 18$4,374 19$4,624 20$4,624 21$4,824 22$5,074 23$5,074 24 25 26 27 28 29 30 31 1 2 3 4 5

Fair Availability

23% of dates checked are available within 10% of the lowest price

Tuesday, March 10th, 2026

3 round-trip options

Returning

Fri, Mar 20, 2026•10 Day Trip

$4,626 USD

Returning

Sat, Mar 21, 2026•11 Day Trip

$4,626 USD

Returning

Sun, Mar 22, 2026•12 Day Trip

$4,626 USD